基础-SQL-DQL-执行顺序
select 是在where之后执行的,select也是在order by之前执行
DQL语句的执行顺序为: from ... where ... group by ... having ... select ... order by ... limit ...
select 是在where之后执行的,select也是在order by之前执行
DQL语句的执行顺序为: from ... where ... group by ... having ... select ... order by ... limit ...